Head coach Jim Harbaugh of the San Francisco 49ers looks on during warm-ups prior to their game between the San Francisco 49ers and the Seattle Seahawks at Qwest Field on September 15, 2013 in Seattle, Washington.

Photo: Jonathan Ferrey, Getty Images

Head coach Jim Harbaugh of the San Francisco 49ers looks on during...

Head coach Jim Harbaugh of the San Francisco 49ers looks on during... Photo-5191228.70216 - SFGate

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Eric Reid of the San Francisco 49ers gets helped off the field after a play against the Seattle Seahawks during their game at Qwest Field on September 15, 2013 in Seattle, Washington.

Photo: Jonathan Ferrey, Getty Images

Eric Reid of the San Francisco 49ers gets helped off the field...

Eric Reid of the San Francisco 49ers gets helped off the field... Photo-5191219.70216 - SFGate

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San Francisco 49ers' Ian Williams is taken off the field with an injury in the first half of an NFL football game against the Seattle Seahawks, Sunday, Sept. 15, 2013, in Seattle.

Photo: John Froschauer, Associated Press

San Francisco 49ers' Ian Williams is taken off the field with an...

San Francisco 49ers' Ian Williams is taken off the field with... Photo-5191231.70216 - SFGate

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Aldon Smith #99 of the San Francisco 49ers sacks Russell Wilson #3 of the Seattle Seahawks during their game at CenturyLink Field on September 15, 2013 in Seattle, Washington.

Cornerback Richard Sherman of the Seattle Seahawks celebrates after making an interception in the second half against the San Francisco 49ers at CenturyLink Field on September 15, 2013 in Seattle, Washington.

Seattle Seahawks' Cliff Avril, left, forces a fumble by San Francisco 49ers quarterback Colin Kaepernick in the first half of an NFL football game, Sunday, Sept. 15, 2013, in Seattle. The Seahawks recovered the ball on the play.

Weather radar is shown on a giant video screen at CenturyLink Field during a weather delay in an NFL football game between the Seattle Seahawks and the San Francisco 49ers, Sunday, Sept. 15, 2013, in Seattle.

Photo: John Froschauer, Associated Press

Weather radar is shown on a giant video screen at CenturyLink Field...